Let's roll up our sleeves and solve this. We have 399 and we're going to multiply it by 448, essentially adding 399 to itself 448 times.
Step 1: 0 + 399 = 399
Step 2: 399 + 399 = 798
Step 3: 798 + 399 = 1197
Step 4: 1197 + 399 = 1596
Step 5: 1596 + 399 = 1995
Step 6: 1995 + 399 = 2394
Step 7: 2394 + 399 = 2793
Step 8: 2793 + 399 = 3192
Step 9: 3192 + 399 = 3591
Step 10: 3591 + 399 = 3990
Step 11: 3990 + 399 = 4389
Step 12: 4389 + 399 = 4788
Step 13: 4788 + 399 = 5187
Step 14: 5187 + 399 = 5586
Step 15: 5586 + 399 = 5985
Step 16: 5985 + 399 = 6384
Step 17: 6384 + 399 = 6783
Step 18: 6783 + 399 = 7182
Step 19: 7182 + 399 = 7581
Step 20: 7581 + 399 = 7980
Step 21: 7980 + 399 = 8379
Step 22: 8379 + 399 = 8778
Step 23: 8778 + 399 = 9177
Step 24: 9177 + 399 = 9576
Step 25: 9576 + 399 = 9975
Step 26: 9975 + 399 = 10374
Step 27: 10374 + 399 = 10773
Step 28: 10773 + 399 = 11172
Step 29: 11172 + 399 = 11571
Step 30: 11571 + 399 = 11970
Step 31: 11970 + 399 = 12369
Step 32: 12369 + 399 = 12768
Step 33: 12768 + 399 = 13167
Step 34: 13167 + 399 = 13566
Step 35: 13566 + 399 = 13965
Step 36: 13965 + 399 = 14364
Step 37: 14364 + 399 = 14763
Step 38: 14763 + 399 = 15162
Step 39: 15162 + 399 = 15561
Step 40: 15561 + 399 = 15960
Step 41: 15960 + 399 = 16359
Step 42: 16359 + 399 = 16758
Step 43: 16758 + 399 = 17157
Step 44: 17157 + 399 = 17556
Step 45: 17556 + 399 = 17955
Step 46: 17955 + 399 = 18354
Step 47: 18354 + 399 = 18753
Step 48: 18753 + 399 = 19152
Step 49: 19152 + 399 = 19551
Step 50: 19551 + 399 = 19950
Step 51: 19950 + 399 = 20349
Step 52: 20349 + 399 = 20748
Step 53: 20748 + 399 = 21147
Step 54: 21147 + 399 = 21546
Step 55: 21546 + 399 = 21945
Step 56: 21945 + 399 = 22344
Step 57: 22344 + 399 = 22743
Step 58: 22743 + 399 = 23142
Step 59: 23142 + 399 = 23541
Step 60: 23541 + 399 = 23940
Step 61: 23940 + 399 = 24339
Step 62: 24339 + 399 = 24738
Step 63: 24738 + 399 = 25137
Step 64: 25137 + 399 = 25536
Step 65: 25536 + 399 = 25935
Step 66: 25935 + 399 = 26334
Step 67: 26334 + 399 = 26733
Step 68: 26733 + 399 = 27132
Step 69: 27132 + 399 = 27531
Step 70: 27531 + 399 = 27930
Step 71: 27930 + 399 = 28329
Step 72: 28329 + 399 = 28728
Step 73: 28728 + 399 = 29127
Step 74: 29127 + 399 = 29526
Step 75: 29526 + 399 = 29925
Step 76: 29925 + 399 = 30324
Step 77: 30324 + 399 = 30723
Step 78: 30723 + 399 = 31122
Step 79: 31122 + 399 = 31521
Step 80: 31521 + 399 = 31920
Step 81: 31920 + 399 = 32319
Step 82: 32319 + 399 = 32718
Step 83: 32718 + 399 = 33117
Step 84: 33117 + 399 = 33516
Step 85: 33516 + 399 = 33915
Step 86: 33915 + 399 = 34314
Step 87: 34314 + 399 = 34713
Step 88: 34713 + 399 = 35112
Step 89: 35112 + 399 = 35511
Step 90: 35511 + 399 = 35910
Step 91: 35910 + 399 = 36309
Step 92: 36309 + 399 = 36708
Step 93: 36708 + 399 = 37107
Step 94: 37107 + 399 = 37506
Step 95: 37506 + 399 = 37905
Step 96: 37905 + 399 = 38304
Step 97: 38304 + 399 = 38703
Step 98: 38703 + 399 = 39102
Step 99: 39102 + 399 = 39501
Step 100: 39501 + 399 = 39900
Step 101: 39900 + 399 = 40299
Step 102: 40299 + 399 = 40698
Step 103: 40698 + 399 = 41097
Step 104: 41097 + 399 = 41496
Step 105: 41496 + 399 = 41895
Step 106: 41895 + 399 = 42294
Step 107: 42294 + 399 = 42693
Step 108: 42693 + 399 = 43092
Step 109: 43092 + 399 = 43491
Step 110: 43491 + 399 = 43890
Step 111: 43890 + 399 = 44289
Step 112: 44289 + 399 = 44688
Step 113: 44688 + 399 = 45087
Step 114: 45087 + 399 = 45486
Step 115: 45486 + 399 = 45885
Step 116: 45885 + 399 = 46284
Step 117: 46284 + 399 = 46683
Step 118: 46683 + 399 = 47082
Step 119: 47082 + 399 = 47481
Step 120: 47481 + 399 = 47880
Step 121: 47880 + 399 = 48279
Step 122: 48279 + 399 = 48678
Step 123: 48678 + 399 = 49077
Step 124: 49077 + 399 = 49476
Step 125: 49476 + 399 = 49875
Step 126: 49875 + 399 = 50274
Step 127: 50274 + 399 = 50673
Step 128: 50673 + 399 = 51072
Step 129: 51072 + 399 = 51471
Step 130: 51471 + 399 = 51870
Step 131: 51870 + 399 = 52269
Step 132: 52269 + 399 = 52668
Step 133: 52668 + 399 = 53067
Step 134: 53067 + 399 = 53466
Step 135: 53466 + 399 = 53865
Step 136: 53865 + 399 = 54264
Step 137: 54264 + 399 = 54663
Step 138: 54663 + 399 = 55062
Step 139: 55062 + 399 = 55461
Step 140: 55461 + 399 = 55860
Step 141: 55860 + 399 = 56259
Step 142: 56259 + 399 = 56658
Step 143: 56658 + 399 = 57057
Step 144: 57057 + 399 = 57456
Step 145: 57456 + 399 = 57855
Step 146: 57855 + 399 = 58254
Step 147: 58254 + 399 = 58653
Step 148: 58653 + 399 = 59052
Step 149: 59052 + 399 = 59451
Step 150: 59451 + 399 = 59850
Step 151: 59850 + 399 = 60249
Step 152: 60249 + 399 = 60648
Step 153: 60648 + 399 = 61047
Step 154: 61047 + 399 = 61446
Step 155: 61446 + 399 = 61845
Step 156: 61845 + 399 = 62244
Step 157: 62244 + 399 = 62643
Step 158: 62643 + 399 = 63042
Step 159: 63042 + 399 = 63441
Step 160: 63441 + 399 = 63840
Step 161: 63840 + 399 = 64239
Step 162: 64239 + 399 = 64638
Step 163: 64638 + 399 = 65037
Step 164: 65037 + 399 = 65436
Step 165: 65436 + 399 = 65835
Step 166: 65835 + 399 = 66234
Step 167: 66234 + 399 = 66633
Step 168: 66633 + 399 = 67032
Step 169: 67032 + 399 = 67431
Step 170: 67431 + 399 = 67830
Step 171: 67830 + 399 = 68229
Step 172: 68229 + 399 = 68628
Step 173: 68628 + 399 = 69027
Step 174: 69027 + 399 = 69426
Step 175: 69426 + 399 = 69825
Step 176: 69825 + 399 = 70224
Step 177: 70224 + 399 = 70623
Step 178: 70623 + 399 = 71022
Step 179: 71022 + 399 = 71421
Step 180: 71421 + 399 = 71820
Step 181: 71820 + 399 = 72219
Step 182: 72219 + 399 = 72618
Step 183: 72618 + 399 = 73017
Step 184: 73017 + 399 = 73416
Step 185: 73416 + 399 = 73815
Step 186: 73815 + 399 = 74214
Step 187: 74214 + 399 = 74613
Step 188: 74613 + 399 = 75012
Step 189: 75012 + 399 = 75411
Step 190: 75411 + 399 = 75810
Step 191: 75810 + 399 = 76209
Step 192: 76209 + 399 = 76608
Step 193: 76608 + 399 = 77007
Step 194: 77007 + 399 = 77406
Step 195: 77406 + 399 = 77805
Step 196: 77805 + 399 = 78204
Step 197: 78204 + 399 = 78603
Step 198: 78603 + 399 = 79002
Step 199: 79002 + 399 = 79401
Step 200: 79401 + 399 = 79800
Step 201: 79800 + 399 = 80199
Step 202: 80199 + 399 = 80598
Step 203: 80598 + 399 = 80997
Step 204: 80997 + 399 = 81396
Step 205: 81396 + 399 = 81795
Step 206: 81795 + 399 = 82194
Step 207: 82194 + 399 = 82593
Step 208: 82593 + 399 = 82992
Step 209: 82992 + 399 = 83391
Step 210: 83391 + 399 = 83790
Step 211: 83790 + 399 = 84189
Step 212: 84189 + 399 = 84588
Step 213: 84588 + 399 = 84987
Step 214: 84987 + 399 = 85386
Step 215: 85386 + 399 = 85785
Step 216: 85785 + 399 = 86184
Step 217: 86184 + 399 = 86583
Step 218: 86583 + 399 = 86982
Step 219: 86982 + 399 = 87381
Step 220: 87381 + 399 = 87780
Step 221: 87780 + 399 = 88179
Step 222: 88179 + 399 = 88578
Step 223: 88578 + 399 = 88977
Step 224: 88977 + 399 = 89376
Step 225: 89376 + 399 = 89775
Step 226: 89775 + 399 = 90174
Step 227: 90174 + 399 = 90573
Step 228: 90573 + 399 = 90972
Step 229: 90972 + 399 = 91371
Step 230: 91371 + 399 = 91770
Step 231: 91770 + 399 = 92169
Step 232: 92169 + 399 = 92568
Step 233: 92568 + 399 = 92967
Step 234: 92967 + 399 = 93366
Step 235: 93366 + 399 = 93765
Step 236: 93765 + 399 = 94164
Step 237: 94164 + 399 = 94563
Step 238: 94563 + 399 = 94962
Step 239: 94962 + 399 = 95361
Step 240: 95361 + 399 = 95760
Step 241: 95760 + 399 = 96159
Step 242: 96159 + 399 = 96558
Step 243: 96558 + 399 = 96957
Step 244: 96957 + 399 = 97356
Step 245: 97356 + 399 = 97755
Step 246: 97755 + 399 = 98154
Step 247: 98154 + 399 = 98553
Step 248: 98553 + 399 = 98952
Step 249: 98952 + 399 = 99351
Step 250: 99351 + 399 = 99750
Step 251: 99750 + 399 = 100149
Step 252: 100149 + 399 = 100548
Step 253: 100548 + 399 = 100947
Step 254: 100947 + 399 = 101346
Step 255: 101346 + 399 = 101745
Step 256: 101745 + 399 = 102144
Step 257: 102144 + 399 = 102543
Step 258: 102543 + 399 = 102942
Step 259: 102942 + 399 = 103341
Step 260: 103341 + 399 = 103740
Step 261: 103740 + 399 = 104139
Step 262: 104139 + 399 = 104538
Step 263: 104538 + 399 = 104937
Step 264: 104937 + 399 = 105336
Step 265: 105336 + 399 = 105735
Step 266: 105735 + 399 = 106134
Step 267: 106134 + 399 = 106533
Step 268: 106533 + 399 = 106932
Step 269: 106932 + 399 = 107331
Step 270: 107331 + 399 = 107730
Step 271: 107730 + 399 = 108129
Step 272: 108129 + 399 = 108528
Step 273: 108528 + 399 = 108927
Step 274: 108927 + 399 = 109326
Step 275: 109326 + 399 = 109725
Step 276: 109725 + 399 = 110124
Step 277: 110124 + 399 = 110523
Step 278: 110523 + 399 = 110922
Step 279: 110922 + 399 = 111321
Step 280: 111321 + 399 = 111720
Step 281: 111720 + 399 = 112119
Step 282: 112119 + 399 = 112518
Step 283: 112518 + 399 = 112917
Step 284: 112917 + 399 = 113316
Step 285: 113316 + 399 = 113715
Step 286: 113715 + 399 = 114114
Step 287: 114114 + 399 = 114513
Step 288: 114513 + 399 = 114912
Step 289: 114912 + 399 = 115311
Step 290: 115311 + 399 = 115710
Step 291: 115710 + 399 = 116109
Step 292: 116109 + 399 = 116508
Step 293: 116508 + 399 = 116907
Step 294: 116907 + 399 = 117306
Step 295: 117306 + 399 = 117705
Step 296: 117705 + 399 = 118104
Step 297: 118104 + 399 = 118503
Step 298: 118503 + 399 = 118902
Step 299: 118902 + 399 = 119301
Step 300: 119301 + 399 = 119700
Step 301: 119700 + 399 = 120099
Step 302: 120099 + 399 = 120498
Step 303: 120498 + 399 = 120897
Step 304: 120897 + 399 = 121296
Step 305: 121296 + 399 = 121695
Step 306: 121695 + 399 = 122094
Step 307: 122094 + 399 = 122493
Step 308: 122493 + 399 = 122892
Step 309: 122892 + 399 = 123291
Step 310: 123291 + 399 = 123690
Step 311: 123690 + 399 = 124089
Step 312: 124089 + 399 = 124488
Step 313: 124488 + 399 = 124887
Step 314: 124887 + 399 = 125286
Step 315: 125286 + 399 = 125685
Step 316: 125685 + 399 = 126084
Step 317: 126084 + 399 = 126483
Step 318: 126483 + 399 = 126882
Step 319: 126882 + 399 = 127281
Step 320: 127281 + 399 = 127680
Step 321: 127680 + 399 = 128079
Step 322: 128079 + 399 = 128478
Step 323: 128478 + 399 = 128877
Step 324: 128877 + 399 = 129276
Step 325: 129276 + 399 = 129675
Step 326: 129675 + 399 = 130074
Step 327: 130074 + 399 = 130473
Step 328: 130473 + 399 = 130872
Step 329: 130872 + 399 = 131271
Step 330: 131271 + 399 = 131670
Step 331: 131670 + 399 = 132069
Step 332: 132069 + 399 = 132468
Step 333: 132468 + 399 = 132867
Step 334: 132867 + 399 = 133266
Step 335: 133266 + 399 = 133665
Step 336: 133665 + 399 = 134064
Step 337: 134064 + 399 = 134463
Step 338: 134463 + 399 = 134862
Step 339: 134862 + 399 = 135261
Step 340: 135261 + 399 = 135660
Step 341: 135660 + 399 = 136059
Step 342: 136059 + 399 = 136458
Step 343: 136458 + 399 = 136857
Step 344: 136857 + 399 = 137256
Step 345: 137256 + 399 = 137655
Step 346: 137655 + 399 = 138054
Step 347: 138054 + 399 = 138453
Step 348: 138453 + 399 = 138852
Step 349: 138852 + 399 = 139251
Step 350: 139251 + 399 = 139650
Step 351: 139650 + 399 = 140049
Step 352: 140049 + 399 = 140448
Step 353: 140448 + 399 = 140847
Step 354: 140847 + 399 = 141246
Step 355: 141246 + 399 = 141645
Step 356: 141645 + 399 = 142044
Step 357: 142044 + 399 = 142443
Step 358: 142443 + 399 = 142842
Step 359: 142842 + 399 = 143241
Step 360: 143241 + 399 = 143640
Step 361: 143640 + 399 = 144039
Step 362: 144039 + 399 = 144438
Step 363: 144438 + 399 = 144837
Step 364: 144837 + 399 = 145236
Step 365: 145236 + 399 = 145635
Step 366: 145635 + 399 = 146034
Step 367: 146034 + 399 = 146433
Step 368: 146433 + 399 = 146832
Step 369: 146832 + 399 = 147231
Step 370: 147231 + 399 = 147630
Step 371: 147630 + 399 = 148029
Step 372: 148029 + 399 = 148428
Step 373: 148428 + 399 = 148827
Step 374: 148827 + 399 = 149226
Step 375: 149226 + 399 = 149625
Step 376: 149625 + 399 = 150024
Step 377: 150024 + 399 = 150423
Step 378: 150423 + 399 = 150822
Step 379: 150822 + 399 = 151221
Step 380: 151221 + 399 = 151620
Step 381: 151620 + 399 = 152019
Step 382: 152019 + 399 = 152418
Step 383: 152418 + 399 = 152817
Step 384: 152817 + 399 = 153216
Step 385: 153216 + 399 = 153615
Step 386: 153615 + 399 = 154014
Step 387: 154014 + 399 = 154413
Step 388: 154413 + 399 = 154812
Step 389: 154812 + 399 = 155211
Step 390: 155211 + 399 = 155610
Step 391: 155610 + 399 = 156009
Step 392: 156009 + 399 = 156408
Step 393: 156408 + 399 = 156807
Step 394: 156807 + 399 = 157206
Step 395: 157206 + 399 = 157605
Step 396: 157605 + 399 = 158004
Step 397: 158004 + 399 = 158403
Step 398: 158403 + 399 = 158802
Step 399: 158802 + 399 = 159201
Step 400: 159201 + 399 = 159600
Step 401: 159600 + 399 = 159999
Step 402: 159999 + 399 = 160398
Step 403: 160398 + 399 = 160797
Step 404: 160797 + 399 = 161196
Step 405: 161196 + 399 = 161595
Step 406: 161595 + 399 = 161994
Step 407: 161994 + 399 = 162393
Step 408: 162393 + 399 = 162792
Step 409: 162792 + 399 = 163191
Step 410: 163191 + 399 = 163590
Step 411: 163590 + 399 = 163989
Step 412: 163989 + 399 = 164388
Step 413: 164388 + 399 = 164787
Step 414: 164787 + 399 = 165186
Step 415: 165186 + 399 = 165585
Step 416: 165585 + 399 = 165984
Step 417: 165984 + 399 = 166383
Step 418: 166383 + 399 = 166782
Step 419: 166782 + 399 = 167181
Step 420: 167181 + 399 = 167580
Step 421: 167580 + 399 = 167979
Step 422: 167979 + 399 = 168378
Step 423: 168378 + 399 = 168777
Step 424: 168777 + 399 = 169176
Step 425: 169176 + 399 = 169575
Step 426: 169575 + 399 = 169974
Step 427: 169974 + 399 = 170373
Step 428: 170373 + 399 = 170772
Step 429: 170772 + 399 = 171171
Step 430: 171171 + 399 = 171570
Step 431: 171570 + 399 = 171969
Step 432: 171969 + 399 = 172368
Step 433: 172368 + 399 = 172767
Step 434: 172767 + 399 = 173166
Step 435: 173166 + 399 = 173565
Step 436: 173565 + 399 = 173964
Step 437: 173964 + 399 = 174363
Step 438: 174363 + 399 = 174762
Step 439: 174762 + 399 = 175161
Step 440: 175161 + 399 = 175560
Step 441: 175560 + 399 = 175959
Step 442: 175959 + 399 = 176358
Step 443: 176358 + 399 = 176757
Step 444: 176757 + 399 = 177156
Step 445: 177156 + 399 = 177555
Step 446: 177555 + 399 = 177954
Step 447: 177954 + 399 = 178353
Step 448: 178353 + 399 = 178752

So, 399*448 = 178752